CN210815140U

CN210815140U - Chemical liquid mixing device and water treatment facility

Info

Publication number: CN210815140U
Application number: CN201921766432.8U
Authority: CN
Inventors: 杨燕华; 籍文法; 田晓菲
Original assignee: Suez Water Treatment Co Ltd
Current assignee: Suez Environmental Technology Beijing Co Ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-06-23
Anticipated expiration: 2029-10-21

Abstract

The utility model provides a liquid medicine mixing arrangement for mix liquid medicine and pending rivers, liquid medicine mixing arrangement includes: the liquid inlet pipe is used for receiving liquid medicine; and the liquid sending pipe is communicated with the liquid inlet pipe in a fluid mode. The liquid delivery tube has a bore through which the liquid medicine flows out in an outflow direction, which has a component directed against the direction of the water flow to be treated, and meets the water flow to be treated. Therefore, the liquid medicine flowing out through the holes meets the water flow to be treated to form turbulent flow, and efficient mixing of the liquid medicine and the water flow is facilitated. The utility model also provides a water treatment facility, liquid medicine mixing arrangement arranges in the original concrete channel that is used for transmitting pending rivers. Therefore, a special mixing pool or a stirrer is not required to be constructed, and civil engineering and equipment cost is saved; the liquid medicine mixing device causes little head loss of water to be treated, and reduces the energy consumption of water treatment facilities. The liquid medicine mixing device can also be arranged at the water inlet of the original reaction tank.

Description

Chemical liquid mixing device and water treatment facility

Technical Field

The utility model belongs to the technical field of the water treatment, concretely relates to liquid medicine mixing arrangement and water treatment facilities including this liquid medicine mixing arrangement.

Background

Before the sewage is discharged or reused, it needs to be treated to meet specific national standards. In order to remove pollutants in water, various chemical agents are generally required to be added, for example, in a sewage pretreatment stage and a deep treatment stage, a coagulant and a flocculant are required to be added for removing Suspended Solids (SS), Total Phosphorus (TP), and the like; in the biological treatment stage, carbon sources such as sodium acetate and the like are required to be added for removing the total nitrogen.

In order to achieve a good removal effect, it is necessary to provide a chemical liquid mixing device for sufficiently mixing the chemical liquid with the raw water. The first type of mixing device is a reaction tank mixer, which adds prepared liquid medicine with a certain concentration to a specific reaction tank through a pipeline, and fully mixes the liquid medicine and raw water by using a stirrer to realize a reaction effect. The mixing device needs to be provided with a specific reaction tank and a stirring device separately, needs to ensure certain reaction time, is not suitable for occasions with particularly tight occupation, needs mechanical stirring equipment and has extra energy consumption. A second type of mixing device is a line mixer, which is mounted on-line on the stock solution supply line, and which directly adds the liquid medicine to the stock solution flow. The manufacturing and installation costs of such a mixing device are very high and are not suitable for applications with large water volumes and limited installation space, and such a mixing device has a large local head loss.

Therefore, it is desirable to provide a chemical liquid mixing device that can mix chemical liquids efficiently and at low cost.

SUMMERY OF THE UTILITY MODEL

According to an aspect of the utility model, a liquid medicine mixing arrangement is provided for mix liquid medicine and pending rivers, liquid medicine mixing arrangement includes: the liquid inlet pipe is used for receiving the liquid medicine; and a liquid sending pipe which is in fluid communication with the liquid inlet pipe and has a hole through which the liquid medicine flows out of the liquid sending pipe in an outflow direction and meets a flow of water to be treated, wherein the outflow direction has a component that faces a direction of the flow of water to be treated. According to the technical scheme, the liquid medicine flowing out through the holes and the water flow to be treated meet and form a turbulent flow area, so that uniform and efficient mixing between the liquid medicine and the water flow is facilitated.

Alternatively, the outflow direction may be directed opposite to the direction of the water flow to be treated.

Optionally, the outflow direction has a component perpendicular to the direction of the water flow to be treated.

Optionally, the holes have a first hole and a second hole, the outflow direction of the first hole having an upward component perpendicular to the direction of the flow of water to be treated, and the outflow direction of the second hole having a downward component perpendicular to the direction of the flow of water to be treated. According to the technical scheme, the side of the liquid feeding pipe facing the water flow to be treated is provided with the plurality of holes for discharging the liquid medicine towards the separating direction, so that turbulent flow can be formed in a larger area, and the mixing effect is further improved.

Optionally, the first and second apertures are symmetrically arranged with respect to the direction of said water flow to be treated.

Optionally, the first and second holes may form angles of approximately +/-45 ° and-45 °, respectively, opposite to the direction of the flow of water to be treated.

Optionally, the liquid delivery tube extends perpendicular to the direction of the water flow to be treated; and the holes are a plurality of holes arranged in a row in the extending direction of the liquid sending pipe.

Optionally, the liquid sending tube comprises a first liquid sending tube and a second liquid sending tube; the first liquid sending pipe and the second liquid sending pipe are arranged side by side perpendicular to the liquid inlet pipe. According to this solution, the first liquid delivery pipe and the second liquid delivery pipe are spaced apart from each other so that a majority of the flow of water to be treated passes unimpeded between the first liquid delivery pipe and the second liquid delivery pipe. Realize energy input with the great drop through pending water and lead to the medicament to mix and compare, the utility model discloses a head loss of pending water that liquid medicine mixing arrangement caused is very little.

Optionally, the liquid medicine mixing device further comprises an auxiliary pipe parallel to the liquid inlet pipe and in fluid communication with both the first liquid sending pipe and the second liquid sending pipe. According to the technical scheme, the liquid inlet pipe, the first liquid sending pipe, the second liquid sending pipe and the auxiliary pipe are in fluid communication to form a loop, so that liquid medicine can smoothly reach a plurality of holes in the liquid sending pipe, and a better liquid medicine adding effect is realized; moreover, the auxiliary tube is advantageous for enhancing the structure of the liquid medicine mixing device.

Optionally, the liquid medicine mixing device further comprises a reinforcing rib, and two ends of the reinforcing rib are respectively and fixedly connected to the liquid inlet pipe and the auxiliary pipe. According to the technical scheme, the structure of the liquid medicine mixing device is further enhanced, so that the liquid medicine mixing device can be used in occasions with high flow.

Alternatively, the chemical liquid is formed by mixing a chemical and dilution water, and the dilution water may be added to the raw water to be treated by a circulation pump. According to the technical scheme, the diluted liquid medicine has higher energy at the liquid medicine flowing out of the hole of the liquid sending pipe, so that the diluted liquid medicine and the water flow to be treated are mixed more uniformly and efficiently.

According to another aspect of the present invention, there is provided a water treatment facility comprising a liquid medicine mixing device according to the above; and a channel, constructed of concrete, for conveying the water flow to be treated; wherein the liquid medicine mixing device is disposed in the channel. According to the technical scheme, the liquid medicine mixing device can be arranged in the original channel of the water treatment facility, a special mixing pool or a stirrer does not need to be constructed, and the civil engineering and equipment cost is saved; moreover, the liquid medicine mixing device is directly arranged in the channel, so that the installation and the maintenance are very convenient, and the cost benefit is remarkable.

According to yet another aspect of the present invention, there is provided a water treatment facility comprising a liquid medicine mixing device according to the above; and a reaction tank having a water inlet through which a flow of water to be treated enters the reaction tank, wherein the liquid medicine mixing device is disposed in the reaction tank adjacent to the water inlet. According to the technical scheme, the liquid medicine mixing device can be arranged at the water inlet of the original reaction tank in the water treatment facility, so that the efficient mixing of the medicine and the water to be treated is realized, the medicine consumption is reduced, and the operation cost is reduced.

Drawings

Fig. 1 is a front view of a liquid medicine mixing device according to an embodiment of the present invention;

FIG. 2 is a schematic sectional view of a liquid sending tube of the liquid medicine mixing device;

FIG. 3 is a front view of a water treatment facility including a liquid medicine mixing device disposed in a channel according to a first embodiment;

fig. 4 is a front view of a water treatment facility according to a second embodiment, which includes a liquid medicine mixing device disposed at a water inlet of a reaction tank.

Detailed Description

Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the drawings, like numbering generally identifies like components.

Fig. 1 shows a liquid medicine mixing device 10 according to the present invention, which includes a liquid inlet pipe 11 and a liquid sending pipe 12. The liquid inlet pipe 11 is for receiving the liquid medicine F mixed in advance and delivering the liquid medicine F to the liquid sending pipe 12. The liquid sending pipe 12 is provided with a plurality of holes 13, and the plurality of holes 13 are oriented against the water flow W to be treated for delivering the liquid medicine F into the water flow W to be treated.

As shown in FIG. 1, the liquid medicine mixing device 10 may include two liquid sending tubes 12 arranged side by side, wherein a first liquid sending tube 14 is connected to a first opening on the liquid inlet tube 11 in fluid communication at a first height position adjacent to a lower end of the liquid inlet tube 11; the second liquid feeding pipe 15 is connected in fluid communication to a second opening in the liquid inlet pipe 11 at a second height level, which is higher than the first height level and at a distance therefrom. The first liquid sending pipe 14 and the second liquid sending pipe 15 are parallel to each other and extend perpendicular to the liquid inlet pipe 11 for the same length. The embodiment of fig. 1 shows a frame structure with two liquid delivery tubes arranged in parallel, but the invention is not limited thereto, and other numbers and arrangements of liquid delivery tubes may be used in other embodiments.

At the ends of the first liquid sending pipe 14 and the second liquid sending pipe 15 remote from the liquid inlet pipe 11, an auxiliary pipe 16 is provided, which is in fluid communication with the first liquid sending pipe 14 and the second liquid sending pipe 15 and is arranged parallel to the liquid inlet pipe 11. The auxiliary pipe 16 can connect the first liquid sending pipe 14 and the second liquid sending pipe 15 with each other to form a fluid loop, thereby improving the liquid medicine adding effect; the auxiliary tube 16 can support the first liquid sending tube 14 and the second liquid sending tube 15, thereby improving the overall strength of the chemical liquid mixing device 10.

In order to further enhance the strength of the liquid medicine mixing device 10, a reinforcing rib 17 is further provided, which is fixedly connected between the liquid inlet pipe 11 and the auxiliary pipe 16 at a third height, which is adjacent to the upper end of the auxiliary pipe 16, and is substantially parallel to the first liquid sending pipe 14 and the second liquid sending pipe 15. This firmly constructed chemical mixing device 10 is suitable for use in applications where the flow rate of the water to be treated is large.

As shown in FIG. 1, the upper end of the liquid inlet pipe 11 is provided with a liquid inlet 18 at a fourth height position higher than the third height position. A flange is provided at the feed port 18 for connection to a delivery tube (not shown) for delivering the liquid medicine.

FIG. 2 shows a schematic cross-sectional view of an exemplary liquid delivery tube 12. The liquid delivery tube 12 may have a circular cross-section. As shown in the figure, the liquid sending pipe 12 has a plurality of sets of holes 13 arranged in a row on the side facing the water flow W to be treated. Each set of holes 13 may have two holes, an upper hole 131 and a lower hole 132, the upper hole 131 being located above the lower hole 132. The outflow direction of each hole 13 (i.e., the direction of the line from the center line of the liquid sending pipe 12 to the center point of the hole 13) may form an acute angle, for example, 45 °, with the first diameter direction H (i.e., the direction opposite to the direction of the water flow W). In this case, the outflow direction of each hole 13 has a component opposite to the direction of the water flow W to be treated, causing the liquid medicine F and the water flow W exiting the holes 13 to flow toward each other, creating turbulence promoting thorough mixing of the liquid medicine F and the water flow W. The embodiment of fig. 2 shows that each group of holes 13 has two holes spaced above and below, but the invention is not limited thereto, and in other embodiments other numbers and arrangements of holes may be used, such as a single hole facing the flow W, as long as the outflow direction of the holes has a component opposite to the direction of the flow W to be treated.

Here, the chemical solution F is formed by mixing the chemical with dilution water, and the dilution water may be factory production water or raw water by a circulating water pump to dilute the chemical. In order to ensure the dilution effect, the dilution water amount is generally selected to be about 2-10% of the raw water amount. The size and the number of the holes can be calculated according to the dilution water quantity, and the flow velocity of an orifice is generally ensured to be about 3-4 m/s. To avoid orifice blockage, the orifice diameter is typically greater than 4 mm.

Fig. 3 shows a water treatment facility according to an embodiment of the present invention, wherein the liquid medicine mixing device 10 is arranged in the channel 20. In the field of water treatment, channels, usually constructed of concrete, transport the water flow W to be treated from one treatment station to the next. The liquid medicine mixing device 10 of the present invention is directly placed in such a channel 20. As shown in FIG. 3, the inlet port 18 of the liquid medicine mixing device 10 extends beyond the upper surface of the channel 20 to facilitate connection to a liquid medicine delivery pipe; in addition, the width of the liquid medicine mixing means 10 is close to the height of the channel 20 so that the liquid sending tube 12 extends over most of the width of the channel 20, whereby the liquid medicine mixing means 10 is arranged to throw the liquid medicine in a large area.

The liquid medicine mixing device 10 can realize the efficient feeding and on-line mixing of the liquid medicine F in the process that the water flow W to be treated flows along the channel by utilizing the original channel in the water treatment facility, so that a special mixing tank and a stirring device do not need to be constructed, and the civil engineering and equipment cost is greatly saved. The liquid medicine mixing device 10 is arranged in the channel, and the installation and the maintenance are very convenient. In addition, the chemical liquid mixing device 10 has a frame structure, and the sectional area of the chemical liquid mixing device occupying the water flow W to be treated is small, so that the flow state of the water to be treated is not affected, and head loss is not caused. Compared with an on-line mixer and the capacity input caused by water dropping, the water head loss of the water to be treated is small, the elevation difference between water treatment structures can be reduced, and the energy consumption is reduced. Moreover, the liquid medicine F and the water flow W are just opposite to meet at a high speed, the turbulent flow effect is obvious, the mixing effect is uniform, the time consumption is short (for example, 10-20 s), and the method is suitable for adding the high-concentration liquid medicine.

Fig. 4 shows a water treatment facility according to a second embodiment of the present invention, in which the chemical liquid mixing device 10 is disposed at the water inlet 33 of the reaction tank 30. In the existing water treatment facilities, there are a variety of reaction tanks 30, and the reaction tanks 30 are used to sufficiently react the chemical solution with the water flow W to be treated. As shown in fig. 4, the water inlet 33 of the reaction tank 30 allows the flow W of the water to be treated to flow into the reaction tank 30. The liquid medicine mixing device 10 is placed adjacent to the water inlet port 33 so that the liquid sending pipe 12 faces the water flow W to be treated within the range of the water inlet port 33.

The liquid medicine mixing device 10 of this embodiment can utilize the original reaction tank in the water treatment facility, when the water flow W to be treated enters the reaction tank, realize the efficient feeding and on-line mixing of the liquid medicine F, make the liquid medicine fully react with the water to be treated, save the consumption of the medicine, and then reduce the medicine cost. Moreover, the liquid medicine mixing device 10 has a frame structure, the sectional area occupying the water inlet 33 is small, and the energy loss caused by the water flow W to be treated is small; moreover, the whole occupied space is small, and the subsequent treatment operation in the reaction tank cannot be interfered.

While certain embodiments for carrying out the invention have been described in detail, it should be understood that they have been presented by way of example only, and not limitation to the scope, applicability, or configuration of the invention in any way. The scope of the invention is defined by the appended claims and equivalents thereof. Many variations of the foregoing embodiments may be made by those skilled in the art in light of the teachings of the present disclosure, and such variations are within the scope of the present disclosure.

List of reference numerals

10 liquid medicine mixing device

11 liquid inlet pipe

12 liquid delivery pipe

13 holes

131 upper hole

132 lower hole

14 first liquid sending pipe

15 second liquid delivery pipe

16 auxiliary tube

17 reinforcing rib

18 liquid inlet

20 channels

30 reaction tank

31 side wall of reaction tank

32 bottom wall of reaction tank

33 inlet of reaction tank

W water stream to be treated

F medicinal liquid

Claims

1. A liquid medicine mixing device for mixing a liquid medicine (F) with a flow of water (W) to be treated, characterized in that it comprises:

a liquid inlet pipe (11) for receiving the liquid medicine (F); and

a liquid delivery pipe (12) in fluid communication with the liquid inlet pipe (11) and having a hole (13), through which hole (13) the liquid medicine (F) flows out of the liquid delivery pipe (12) in an outflow direction and meets a flow of water (W) to be treated;

wherein the outflow direction has a component directed against the direction of the water flow (W) to be treated.

2. The medical-liquid mixing device as claimed in claim 1,

the outflow direction is opposite to the direction of the water flow (W) to be treated.

3. The medical-liquid mixing device as claimed in claim 1,

the outflow direction has a component perpendicular to the direction of the water flow (W) to be treated.

4. The medical-liquid mixing device as claimed in claim 3,

the bore (13) having a first bore (131) and a second bore (132);

the outflow direction of the first holes (131) has an upward component perpendicular to the direction of the flow (W) of water to be treated; and is

The outflow direction of the second holes (132) has a downward component perpendicular to the direction of the water flow (W) to be treated.

5. The medical-liquid mixing device as claimed in claim 4,

the first (131) and second (132) holes are arranged symmetrically with respect to the direction of the flow (W) of water to be treated.

6. The medical-liquid mixing device as claimed in claim 5,

said first (131) and second (132) holes form angles of approximately +/-45 ° and-45 °, respectively, opposite to the direction of the flow (W) of water to be treated.

7. The liquid medicine mixing device according to any one of claims 1 to 6,

the liquid delivery pipe (12) extends perpendicular to the direction of the water flow (W) to be treated; and is

The holes (13) are a plurality of holes arranged in a row in the extending direction of the liquid sending pipe (12).

8. The medical-liquid mixing device as claimed in claim 7,

the liquid sending pipe (12) comprises a first liquid sending pipe (14) and a second liquid sending pipe (15);

wherein the first liquid sending pipe (14) and the second liquid sending pipe (15) are arranged side by side perpendicular to the liquid inlet pipe (11).

9. Medical liquid mixing apparatus according to claim 8, further comprising an auxiliary tube (16), wherein said auxiliary tube (16) is parallel to said liquid inlet tube (11) and is in fluid communication with both said first liquid sending tube (14) and said second liquid sending tube (15).

10. The liquid medicine mixing device according to claim 9, further comprising a reinforcing rib (17), wherein both ends of the reinforcing rib (17) are fixedly connected to the liquid inlet pipe (11) and the auxiliary pipe (16), respectively.

11. The chemical liquid mixing device according to claim 1, wherein the chemical liquid (F) is a mixture of a chemical and dilution water, and the dilution water is raw water to be treated added by a circulation pump.

12. A water treatment facility, comprising:

the liquid medicine mixing device according to any one of claims 1 to 11; and

a channel (20) constructed of concrete for conveying a flow (W) of water to be treated;

wherein the liquid medicine mixing device is arranged in the channel (20).

13. A water treatment facility, comprising:

the liquid medicine mixing device according to any one of claims 1 to 11; and

a reaction tank (30) having a water inlet (33), through which water flow (W) to be treated enters the reaction tank (30);

wherein the liquid medicine mixing device is arranged in the reaction tank (30) adjacent to the water inlet (33).